21222322023 has 32 divisors (see below), whose sum is σ = 35138928640. Its totient is φ = 11118163680.

The previous prime is 21222322013. The next prime is 21222322067. The reversal of 21222322023 is 32022322212.

It is not a de Polignac number, because 21222322023 - 2¹⁴ = 21222305639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222322013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845515 + ... + 870252.

It is an arithmetic number, because the mean of its divisors is an integer number (1098091520).

Almost surely, 2^21222322023 is an apocalyptic number.

21222322023 is a deficient number, since it is larger than the sum of its proper divisors (13916606617).

21222322023 is a wasteful number, since it uses less digits than its factorization.

21222322023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715827.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21222322023 its reverse (32022322212), we get a palindrome (53244644235).

The spelling of 21222322023 in words is "twenty-one billion, two hundred twenty-two million, three hundred twenty-two thousand, twenty-three".